3.0 Nor Flash Restore

Hi, I was just restoring my ipod via nor flash (boot logo purposes) and an idea came to me. Since 3.0 is just a new firmware release , also with many upgrades ect. It would be possible to extract the 3.0 firmware (and goodies) and then inject them into a nor flash. Because from what I heard is that apple havn't encryped the firmware with iv/key. This was just an idea, but obv you need the RootFSKey which is highly encrypted, Leave your comments and I am open to critisism